CN105543682A - Hot-rolled pickled plate used for automobile structure - Google Patents
Hot-rolled pickled plate used for automobile structure Download PDFInfo
- Publication number
- CN105543682A CN105543682A CN201510974878.XA CN201510974878A CN105543682A CN 105543682 A CN105543682 A CN 105543682A CN 201510974878 A CN201510974878 A CN 201510974878A CN 105543682 A CN105543682 A CN 105543682A
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- CN
- China
- Prior art keywords
- hot
- plate used
- good
- automobile structure
- rolled pickled
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Abstract
The invention relates to a metal plate, in particular to a hot-rolled pickled plate used for an automobile structure. According to the technical scheme, the hot-rolled pickled plate used for the automobile structure comprises, in proportion, 0.04%-0.11% of C, 0.4%-1.12% of Mn, 0.02%-0.05% of Al, 0.006%-0.011% of Nb, 0%-0.05% of Si, 0%-0.01% of P, 0%-0.004% of S, 0%-0.004% of N and the balance Fe. According to the hot-rolled pickled plate used for the automobile structure provided by the invention, a certain amount of the Mn and the Nb are added into low-carbon steel, the strength is improved through solid solution strengthening of the elements of the C and the Mn and refined crystalline strengthening of the element Nb, and the good punching property and the good welding property are maintained while the strength is improved, so that the good strength and the good plastic equilibrium are presented.
Description
Technical field
The present invention relates to a kind of metal sheet, be specifically related to a kind of vehicle structure hot rolling acid-cleaning plate.
Background technology
Vehicle structure metal sheet, needs higher intensity, keeps good punching performance and welding property simultaneously, present good intensity and plastic equilibrium.Ordinary low-carbon steel is difficult to meet the demands.
Summary of the invention
The invention provides a kind of vehicle structure hot rolling acid-cleaning plate, a certain amount of manganese, niobium is added in soft steel, intensity is improved by the solution strengthening of carbon, manganese element and the refined crystalline strengthening of niobium element, and while raising intensity, keep good punching performance and welding property, present good intensity and plastic equilibrium.
Technical scheme of the present invention is as follows: a kind of vehicle structure hot rolling acid-cleaning plate, its chemical composition proportioning is C=0.04-0.11%, Mn=0.4-1.2%, Al=0.02-0.05%, Nb=0.006-0.011%, Si≤0.05%, P≤0.01%, S≤0.004%, N≤0.004%, and all the other are Fe.
Wherein composition effect is as follows:
Carbon (C): in steel, carbon content decides intensity and other performance of steel, along with the increase of carbon content in steel, yield-point and tensile strength raise, but plasticity and impact reduce.C=0.04-0.11%, can obtain high-elongation and good punching performance, reduces the volume ratio of carbide in crystal grain.
Manganese (Mn): in steelmaking process, manganese is good reductor and sweetening agent, and manganese part and iron in steel dissolve each other formation sosoloid, have obvious effect to raising intensity.Mn=0.4-1.2%, can obtain good processability, and has certain intensity.
Aluminium (Al): aluminium generally adds in steel as reductor, the oxygen in molten steel is mainly removed in effect, aluminium suppresses the solid solution of nitrogen in ferrite as determining nitrogen agent in addition, and aluminium mainly controls the tissue of finished steel plate and the position of interstitial atom with the form of second-phase AlN; Al=0.02-0.05%, can improve steel plate punched performance, eliminates strain aging, improves cold plasticity and prevents from producing slip line in punching course.
Niobium (Nb): niobium element mainly by forming tiny compound with C, the N in steel, plays the effect of crystal grain thinning, Nb=0.006-0.011%, has again good deep drawability and excellent unit elongation while making acid-cleaning plate improve intensity.
Silicon (Si): silicon and oxygen have stronger avidity is the reductive agent in steelmaking process and reductor.
Phosphorus (P): in the ordinary course of things, phosphorus is harmful element in steel, and along with the increase of P content, cold shortness increases, and welding property degenerates, and intensity increases, but plasticity index reduces, and cold-bending property degenerates, and therefore controls phosphorus content P≤0.01%.
Sulphur (S): sulphur is harmful element in steel, particularly serious to the deep-draw steel of machining deformation complexity, sulfide inclusion (mainly MnS) along rolling direction into strips or chainlike distribution, thus makes the transverse cold bending performance depreciation of steel plate in the operation of rolling, produces anisotropy; In addition, sulphur also can cause the red brittleness of steel plate, therefore reduces S content S≤0.004%.
Beneficial effect of the present invention is: improve intensity by the solution strengthening of carbon, manganese element and the refined crystalline strengthening of niobium element, and keeps good punching performance and welding property while raising intensity, presents good intensity and plastic equilibrium.Vehicle structure hot rolling acid-cleaning plate has the pure and manganese addition solution strengthening of low-carbon (LC), microalloying, steel and adds the features such as niobium refined crystalline strengthening.
Embodiment
A kind of vehicle structure hot rolling acid-cleaning plate, its chemical composition proportioning is C=0.04-0.11%, Mn=0.4-1.2%, Al=0.02-0.05%, Nb=0.006-0.011%, Si≤0.05%, P≤0.01%, S≤0.004%, N≤0.004%, and all the other are Fe.The mechanical performance index of concrete example and metallographic structure analysis are in table one.By the parameter in table one, known above-mentioned vehicle structure hot rolling acid-cleaning plate meets the requirement of vehicle structure metal sheet.
Table one
| Numbering | Yield strength | Tensile strength | Unit elongation | Grain fineness number | Tissue | Banded rank |
| 1# | 428 | 496 | 35 | 10 | F+P | 2.5 |
| 2# | 403 | 472 | 35 | 11.4 | F+P | 2 |
| 3# | 359 | 476 | 34 | 11.4 | A small amount of+B the trace of F+P | 4 |
Claims (1)
1. a vehicle structure hot rolling acid-cleaning plate, it is characterized in that, its chemical composition proportioning is C=0.04-0.11%, Mn=0.4-1.2%, Al=0.02-0.05%, Nb=0.006-0.011%, Si≤0.05%, P≤0.01%, S≤0.004%, N≤0.004%, and all the other are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974878.XA CN105543682A (en) | 2015-12-22 | 2015-12-22 | Hot-rolled pickled plate used for automobile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974878.XA CN105543682A (en) | 2015-12-22 | 2015-12-22 | Hot-rolled pickled plate used for automobile structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105543682A true CN105543682A (en) | 2016-05-04 |
Family
ID=55823234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510974878.XA Pending CN105543682A (en) | 2015-12-22 | 2015-12-22 | Hot-rolled pickled plate used for automobile structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105543682A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779873A (en) * | 2016-05-12 | 2016-07-20 | 本钢板材股份有限公司 | High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof |
| CN105886914A (en) * | 2016-05-12 | 2016-08-24 | 本钢板材股份有限公司 | High-titanium low-cost S460MC hot-rolled pickle sheet and production method thereof |
| CN105950987A (en) * | 2016-05-12 | 2016-09-21 | 本钢板材股份有限公司 | High-titanium low-cost S420MC hot-rolled acid pickling plate and production method thereof |
| CN107472314A (en) * | 2017-08-21 | 2017-12-15 | 太仓森楚源机械设备有限公司 | new dust car |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551647A (en) * | 1991-08-26 | 1993-03-02 | Nkk Corp | Manufacture of high tensile galvannealed steel sheet excellent in stretch-flanging property |
| JPH05179356A (en) * | 1991-12-26 | 1993-07-20 | Nkk Corp | Production of high tensile hot dip galvannealed steel sheet having excellent elongation and flanging properties |
| JPH11302782A (en) * | 1998-04-21 | 1999-11-02 | Kawasaki Steel Corp | High strength steel sheet for drum can, its production and drum can made of steel |
| JP2009249714A (en) * | 2008-04-09 | 2009-10-29 | Nippon Steel Corp | Method for producing hot-rolled steel sheet excellent in surface-processing property |
| CN102719754A (en) * | 2012-05-31 | 2012-10-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolled deep-punched pickled plate for automobile structures and production method thereof |
| CN102787272A (en) * | 2012-07-26 | 2012-11-21 | 北京科技大学 | Preparation method of hot-rolled acid-washing high-strength steel for automobile carriage |
| CN104630623A (en) * | 2015-01-30 | 2015-05-20 | 首钢总公司 | High-reaming-property hot-rolled acid-washed steel strip and production method thereof |
-
2015
- 2015-12-22 CN CN201510974878.XA patent/CN105543682A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551647A (en) * | 1991-08-26 | 1993-03-02 | Nkk Corp | Manufacture of high tensile galvannealed steel sheet excellent in stretch-flanging property |
| JPH05179356A (en) * | 1991-12-26 | 1993-07-20 | Nkk Corp | Production of high tensile hot dip galvannealed steel sheet having excellent elongation and flanging properties |
| JPH11302782A (en) * | 1998-04-21 | 1999-11-02 | Kawasaki Steel Corp | High strength steel sheet for drum can, its production and drum can made of steel |
| JP2009249714A (en) * | 2008-04-09 | 2009-10-29 | Nippon Steel Corp | Method for producing hot-rolled steel sheet excellent in surface-processing property |
| CN102719754A (en) * | 2012-05-31 | 2012-10-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolled deep-punched pickled plate for automobile structures and production method thereof |
| CN102787272A (en) * | 2012-07-26 | 2012-11-21 | 北京科技大学 | Preparation method of hot-rolled acid-washing high-strength steel for automobile carriage |
| CN104630623A (en) * | 2015-01-30 | 2015-05-20 | 首钢总公司 | High-reaming-property hot-rolled acid-washed steel strip and production method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779873A (en) * | 2016-05-12 | 2016-07-20 | 本钢板材股份有限公司 | High-titanium low-cost S500MC hot-rolled pickled plate and production method thereof |
| CN105886914A (en) * | 2016-05-12 | 2016-08-24 | 本钢板材股份有限公司 | High-titanium low-cost S460MC hot-rolled pickle sheet and production method thereof |
| CN105950987A (en) * | 2016-05-12 | 2016-09-21 | 本钢板材股份有限公司 | High-titanium low-cost S420MC hot-rolled acid pickling plate and production method thereof |
| CN107472314A (en) * | 2017-08-21 | 2017-12-15 | 太仓森楚源机械设备有限公司 | new dust car |
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Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |